I do know that the coop does not have to be the color of the house - most of the coops around here are red and the house is not! My girls love their roost so they would be very unhappy without one, but roosts are not hard so I am not worried! We'll figure it out, I just have to remember to call tomorrow!Now you understand.
Since the playhouse is going to be temporary, I would wait and ask for forgiveness. Just ask about your final coop. Also once the shed style coop gets walls and a roof, little ones can be moved in even before roosting bars or nesting boxes are made. They do need venting even at night but a temporary nesting box can be a cardboard box.